Pipe-coupling.



J. 1). HAZLEIG: L.'-L. LORD.

- PIPE COUPLING.

APPLIOATION FILED OUT. 13, 1908- Patented Mar. 23, 1909.

NI EN T0165) Q Attorney UNITED STATES PATENT orrrcn.

JOHN D. HAZLET, OF FRANKLIN, AND LEWIS L. LORD, OF MEADVILLE,PENNSYLVANIA.

PIPE-COUPLING.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed October 13, 1908. Serial No. 457,527.

T 0 all whom it may concern:

Be it known that we, JOHN D. H Z ET and LEWIS L. LORD, citizens of theUnited States, residing at Franklin, county of Venango, and Meadville,county of Crawford, State of Pennsylvania, respectively, have inventedcertain new and useful Improvements in Pipe-Couplings, of which thefollowing is a specification, reference being had therein to theaccompanying drawing.

This invention relates to a pipe coupling, and particularly to adetachable form-there of by which adjacent pipe sections may beconnected to allow for proper expansion and contraction thereof and alsoa deflection of one section at an angle to the other.

The invention has for an object to provide a tubular body for thecoupling within which bushings are disposed having interior flanges toengage the periphery of the pipe and provide a contact face inengagement with which a packing ring is disposed, said ring beingcompressed by glands drawn toward each other in the usual manner. 7

A further object of the invention is to provide a novel form of bushingshaving at their outer ends an interiorly extending flange to engage theperiphery of the pipe and an abutting flange to contact with the ends ofsaid pipe sections in order to centrally locate the coupling relative tothe joint between the pipes, said bushings being formed in segmentalsections to permit their ready application to the pipe sections.

Other and further objects and advantages of the invention will behereinafter fully set forth and the novel features thereof defined bythe appended claims.

In the drawing:Figure 1 is a longitudinal section of the inventionapplied to pipe sections; Fig. 2 is a detail perspective of theseparated bushings; Fig. 3 is a longitudinal section showing amo difiedform of bushing and Fig. 4 is a similar view of a modified form of plateor flange.

Like numerals refer to like several views of the drawing.

The numeral 10 designates the tubular body of the coupling which may beof any desired material, for instance, comprises a section of piping ofproper diameter. Within this tubular body the bushings 11 are disposedand each thereof provided at one end with an eXteriorly extending flange12 adapted to contact with and compress a packing parts in the 13, whileat the opposite end, or centrally of the tubular body, an abuttingflange 14 is provided which is adapted to engage the ends of the pipesections 15, as shown in Fig. 1. These bushings are preferably formed intwo or more segmental sections adapted to be assembled about the pipeand with the flanges 14 thereof in contact with the pipe ends. Insteadof forming these bushings of two members each comprising assembledsections, as shown in Fig. 1, the bushings may comprise a single memberas indicated at 16 in Fig. 3, having a central abutting flange 17 andend flanges 18 performing the functions hereinbefore described. Whenformed as a single member it is preferably in two segmental sections.

Cooperating with the packing 13 is a pressure gland or plate 19 havingthe bearing face 20 to contact with the packing 13 and a bolting flange21 adapted to receive the bolts 22 by which pressure is applied to theglandsat the opposite ends thus compressing the. packing both outwardlyagainst the body 10 and inwardly against the outer periphery of thepipe. This pressure is as sisted by the formation of the packing havinginclined walls to cooperate with the faces of the bushings and glands,respectively.

A modified form of packing plate is (lisclosed in Fig. 4 where thepacking is shown at 23 and is there provided with a straight Wall 24abutting against a flange plate 25 having a central tapered opening 26through which the pipe section 15 extends. This form of plate effects acompression of the packing against both the pipe sections and thetubular body of the coupling, While the space between the flanges of thebushing permits a ready deflection of one section of the pipe at anangle to the other, as shown in Fig. 4. It will be seen that the use ofthis form of bushing permits its ready application within the tubularbody and effects a compression of the packing against both the body andpipe sections, while the space allowed between the flanges of thebushing permits an angular deflection of one pipe section relative tothe body of the coupling to any necessary extent and effects a tightconnection between the pipe sections without the necessity of usingspecially constructed coupling members. The abutting flange carried bythe bushing is disposed at a central point within the coupling and bycontact with the pipe sections keeps the coupling centrally located atthe joint, while permitting the necessary expansion and contraction. Thepacking flange at the ends of the bushing also forms a pivotal point forthe deflection of the pipe section when desired and cooperates with theflange or gland to compress the packing at that point. It will also benoted that the outer face of the plate or gland is enlarged so as toprovide space for the deflection of the pi e section, while any internalpressure W ich may escape at the ends of the pipe sections next theabutting flange is exerted against the packing flange at the end of thebushing and thus assists in maintaining the proper pressure against thepacking to effect a tight joint at that point.

In applying the coupling the plates or glands are placed upon the pipesections together with the packing and tubular body, these parts beingslipped away from the joint. The joint of the pipe sections is thenspaced the necessary distance to allow for expansion when the sectionsof the bushing are assembled about the joint and the tubular bodyslipped over these sections to retain them in position. The packings arethen brought into contact with the ends of the sections and the glandsapplied to engage the packings when the necessary tension is secured bythe bolts to apply pressure to the several parts. It will therefore beseen that this invention presents a simple and economically constructed.form of coupling adapted to accomplish the most eflicient results andwhich is maintained in central position about the joint so as to preventcreeping of the coupling upon the pipe, while allowing the necessaryexpansion and contraction thereof or a deflection of the pipe sections.

Having described our invention and set forth its merits, what we claimand desire to secure by Letters Patent is 1-- 1. A pipe couplingcomprising a tubular body, a bushing disposed therein and provided withextended packing flanges engaging the periphery of the pipe sections andan abutting flange engaging the ends thereof, a packing disposed incontact with one face of each of said packing flanges, and means at theends of the body compressing said packings.

2. A pipe coupling comprising a tubular body, a bushing disposed thereinand provided with extended packing flanges engag- 1ng the periphery ofthe pipe sections and an abutting flange engaging the ends thereof,

a packing disposed in contact with one face of each of said packingflanges, and a plate engaging said packing at each end of the body andprovided with an enlarged aperture to permit inward deflection of thepipe sections therein.

A pipe coupling comprising a tubular body, bushing disposed therein andprovided with inwardly extending packing flanges at each end engagingthe periphery of the pipe sections, a packing dis )osed in contact withone face of each of said flanges, means compressing said packing at theopposite ends of said body, and an inwardly extending abutting flangecarried by the bushing centrally of said body and engaging the ends ofthe pipe sections.

4. A pipe coupling comprising a tubular body, segmental bushingsdisposed therein and provided with an inwardly extended packing flangeand a parallel inwardly extended abutting flange to contact with theends of the pipe sections, packings at the opposite ends of saidbushings, and means for compressing said paekings.

5. In a pipe coupling, a bushing provided at its end with an interiorlyextended packing flange and also having an interiorly extended abuttingflange of greater length than the packing flange and disposed to engagethe pipe end.

6. In a pipe coupling, a tubular body, segmental bushings disposedtherein each hav ing at its outer end an interiorly extending glandflange and at its inner end a similarly disposed abutting flange ofgreater length than the gland flange, packing disposed within the bodyand in contact with said gland flanges, pressure plates having. glandswithin said body in Contact with the outer face of said packing, andcompressing devices connecting said pressure plates.

In testimony whereof we aflix our signatures in presence of twowitnesses.

JOHN D, HAZLE'l. LEWIS ll. LORD.

Witnesses GEO. T. LINDEN, J. B. FRY,

